@burnout426 I think that was the problem.
A lot of stuff got detected in a safe mode scan and the problem seems to have stopped.

I restarted after the safe mode scan and nothing fishy opened up.
Here's the scan log.

---
Malwarebytes
www.malwarebytes.com

-Log Details-
Scan Date: 10/30/22
Scan Time: 12:06 PM
Log File: 865e0774-583a-11ed-9e7e-00ffd959ad32.json

-Software Information-
Version: 4.5.16.217
Components Version: 1.0.1792
Update Package Version: 1.0.61695
License: Trial

-System Information-
OS: Windows 10 (Build 19044.2130)
CPU: x64
File System: NTFS
User: PC1\HP

-Scan Summary-
Scan Type: Threat Scan
Scan Initiated By: Manual
Result: Completed
Objects Scanned: 369476
Threats Detected: 13
Threats Quarantined: 13
Time Elapsed: 1 min, 37 sec

-Scan Options-
Memory: Enabled
Startup: Enabled
Filesystem: Enabled
Archives: Enabled
Rootkits: Disabled
Heuristics: Enabled
PUP: Detect
PUM: Detect

-Scan Details-
Process: 0
(No malicious items detected)

Module: 0
(No malicious items detected)

Registry Key: 4
PUP.Optional.CleanMyPC, HKLM\SOFTWARE\WOW6432NODE\REG\Clean, Quarantined, 3115, 348488, 1.0.61695, , ame, , , 
PUP.Optional.RegCleanPro, HKU\S-1-5-21-1588534935-4143541944-461472779-1000\SOFTWARE\REG\Clean, Quarantined, 4159, 347493, 1.0.61695, , ame, , , 
PUP.Optional.SystemSpeedup, HKU\S-1-5-21-1588534935-4143541944-461472779-1000\SOFTWARE\SYSTWEAK\ssd, Quarantined, 1601, 190781, 1.0.61695, , ame, , , 
PUP.Optional.SystemSpeedup, HKLM\SOFTWARE\WOW6432NODE\SYSTWEAK\ssd, Quarantined, 1601, 190782, 1.0.61695, , ame, , , 

Registry Value: 3
Adware.StartPage.USACVAR, HKU\S-1-5-21-1588534935-4143541944-461472779-1000\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\RUN|HP, Quarantined, 5810, 582506, 1.0.61695, , ame, , , 
PUM.Optional.DisableMRT, HKLM\SOFTWARE\POLICIES\MICROSOFT\MRT|DONTREPORTINFECTIONINFORMATION, Quarantined, 6449, 676881, 1.0.61695, , ame, , , 
PUM.Optional.DisableMRT, HKLM\SOFTWARE\WOW6432NODE\POLICIES\MICROSOFT\MRT|DONTREPORTINFECTIONINFORMATION, Quarantined, 6449, 676881, 1.0.61695, , ame, , , 

Registry Data: 0
(No malicious items detected)

Data Stream: 0
(No malicious items detected)

Folder: 2
HackTool.KMSpico, C:\PROGRAM FILES\KMSPICO, Quarantined, 6609, 921550, 1.0.61695, , ame, , , 
HackTool.KMSpico, C:\PROGRAMDATA\MICROSOFT\WINDOWS\START MENU\PROGRAMS\KMSPICO, Quarantined, 6609, 921555, 1.0.61695, , ame, , , 

File: 4
PUP.Optional.BundleInstaller, C:\USERS\HP\APPDATA\ROAMING\UTORRENT\UPDATES\3.5.5_45838.EXE, Quarantined, 495, 990390, 1.0.61695, , ame, , 6A8B93E27DCCFF2F250A22B8BDC93168, 50BAEE75B0BB181B5280A1F60B32F7E75ABDA8A4E06CBF32074B1444D73A9CF7
Malware.AI.4198402318, C:\$RECYCLE.BIN\S-1-5-21-2345001899-3086027631-2358910675-1000\$RZASLPC\Z_KEYGEN.EXE, Quarantined, 1000000, -96564978, 1.0.61695, D6AE4C5485CFB62EFA3E890E, dds, 02013304, 8D87F601D5F583CDF02105C82BB7F675, BB72B2007A9BAFCB87F0C258BC30BE8C8706F3073BDAE54410425457A73D6596
Adware.Agent, C:\PROGRAM FILES (X86)\USB DISK SECURITY\LINKZB.EXE, Quarantined, 72, 597820, 1.0.61695, , ame, , F1A4C495076ACDA85609CEEEF78138EC, 90CEFE9C3D21168ED203F52B4C40DEB31DA25CC7974B5DAB0F72427C37E78933
PUP.Optional.GameHack, C:\PROGRAM FILES\CHEAT ENGINE 7.0\STANDALONEPHASE1.DAT, Quarantined, 7578, 393793, 1.0.61695, , ame, , EB339EECEC8AA8C0FD3B08D39799D4D8, 88BB94C3CE727DB13B77ABDBDB75A4C878E91D651692F3618178DEC5BBB7080C

Physical Sector: 0
(No malicious items detected)

WMI: 0
(No malicious items detected)


(end)

---

Thank you for your support. Opera support seriously was the fastest I have ever received.

Hello,
I have been using Opera then Opera Gx for a very long time and I'm loving it!

But recently, every time I start up my windows 10 desktop then proceed to open Opera gx to search for something, a random tab opens by itself and it's always a random website full of ads. Like a website specifically made up to show ads.

It's getting really annoying, that every time I start my browser after turning on my computer, I have to close the random ad site that opens by itself.

I tried disabling all extensions, making a new profile, scanning Opera Gx folder with windows defender and googling my issue. Nothing so far.

So I have come here in hopes of finding help. Please!

Problem: Random ad websites open in a new tab by themselves once the browser is opened after the computer is turned on.

Steps to recreate the problem: 1. Turn off Pc. 2. Turn on the Pc. 3. open Opera Gx. 4. a random tab with random ad website open up.

Intended result: No random tab should open by itself, regardless of the content of it.

Notes: I noticed the tab quickly redirects to those ad sites, so something must be opening the tabs and once that is opened, it redirects to a pool of possible ad sites.(?)

This issue is really bothering me and I have no idea how to stop it.
And I really can't see myself using any other browser but if I can't solve the issue I'll have to start researching for alternatives (although I really dislike every other browser)

-Any help is appreciated. Thank you in advance.

@burnout426

It detected stuff that I quarantined and restarted.
After the restart, the 'malvertising' site was blocked but it still opened.

I will try to see if I can run malwarebyte scan when in safe mode.

@burnout426 I think that was the problem.
A lot of stuff got detected in a safe mode scan and the problem seems to have stopped.

I restarted after the safe mode scan and nothing fishy opened up.
Here's the scan log.

---
Malwarebytes
www.malwarebytes.com

-Log Details-
Scan Date: 10/30/22
Scan Time: 12:06 PM
Log File: 865e0774-583a-11ed-9e7e-00ffd959ad32.json

-Software Information-
Version: 4.5.16.217
Components Version: 1.0.1792
Update Package Version: 1.0.61695
License: Trial

-System Information-
OS: Windows 10 (Build 19044.2130)
CPU: x64
File System: NTFS
User: PC1\HP

-Scan Summary-
Scan Type: Threat Scan
Scan Initiated By: Manual
Result: Completed
Objects Scanned: 369476
Threats Detected: 13
Threats Quarantined: 13
Time Elapsed: 1 min, 37 sec

-Scan Options-
Memory: Enabled
Startup: Enabled
Filesystem: Enabled
Archives: Enabled
Rootkits: Disabled
Heuristics: Enabled
PUP: Detect
PUM: Detect

-Scan Details-
Process: 0
(No malicious items detected)

Module: 0
(No malicious items detected)

Registry Key: 4
PUP.Optional.CleanMyPC, HKLM\SOFTWARE\WOW6432NODE\REG\Clean, Quarantined, 3115, 348488, 1.0.61695, , ame, , , 
PUP.Optional.RegCleanPro, HKU\S-1-5-21-1588534935-4143541944-461472779-1000\SOFTWARE\REG\Clean, Quarantined, 4159, 347493, 1.0.61695, , ame, , , 
PUP.Optional.SystemSpeedup, HKU\S-1-5-21-1588534935-4143541944-461472779-1000\SOFTWARE\SYSTWEAK\ssd, Quarantined, 1601, 190781, 1.0.61695, , ame, , , 
PUP.Optional.SystemSpeedup, HKLM\SOFTWARE\WOW6432NODE\SYSTWEAK\ssd, Quarantined, 1601, 190782, 1.0.61695, , ame, , , 

Registry Value: 3
Adware.StartPage.USACVAR, HKU\S-1-5-21-1588534935-4143541944-461472779-1000\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\RUN|HP, Quarantined, 5810, 582506, 1.0.61695, , ame, , , 
PUM.Optional.DisableMRT, HKLM\SOFTWARE\POLICIES\MICROSOFT\MRT|DONTREPORTINFECTIONINFORMATION, Quarantined, 6449, 676881, 1.0.61695, , ame, , , 
PUM.Optional.DisableMRT, HKLM\SOFTWARE\WOW6432NODE\POLICIES\MICROSOFT\MRT|DONTREPORTINFECTIONINFORMATION, Quarantined, 6449, 676881, 1.0.61695, , ame, , , 

Registry Data: 0
(No malicious items detected)

Data Stream: 0
(No malicious items detected)

Folder: 2
HackTool.KMSpico, C:\PROGRAM FILES\KMSPICO, Quarantined, 6609, 921550, 1.0.61695, , ame, , , 
HackTool.KMSpico, C:\PROGRAMDATA\MICROSOFT\WINDOWS\START MENU\PROGRAMS\KMSPICO, Quarantined, 6609, 921555, 1.0.61695, , ame, , , 

File: 4
PUP.Optional.BundleInstaller, C:\USERS\HP\APPDATA\ROAMING\UTORRENT\UPDATES\3.5.5_45838.EXE, Quarantined, 495, 990390, 1.0.61695, , ame, , 6A8B93E27DCCFF2F250A22B8BDC93168, 50BAEE75B0BB181B5280A1F60B32F7E75ABDA8A4E06CBF32074B1444D73A9CF7
Malware.AI.4198402318, C:\$RECYCLE.BIN\S-1-5-21-2345001899-3086027631-2358910675-1000\$RZASLPC\Z_KEYGEN.EXE, Quarantined, 1000000, -96564978, 1.0.61695, D6AE4C5485CFB62EFA3E890E, dds, 02013304, 8D87F601D5F583CDF02105C82BB7F675, BB72B2007A9BAFCB87F0C258BC30BE8C8706F3073BDAE54410425457A73D6596
Adware.Agent, C:\PROGRAM FILES (X86)\USB DISK SECURITY\LINKZB.EXE, Quarantined, 72, 597820, 1.0.61695, , ame, , F1A4C495076ACDA85609CEEEF78138EC, 90CEFE9C3D21168ED203F52B4C40DEB31DA25CC7974B5DAB0F72427C37E78933
PUP.Optional.GameHack, C:\PROGRAM FILES\CHEAT ENGINE 7.0\STANDALONEPHASE1.DAT, Quarantined, 7578, 393793, 1.0.61695, , ame, , EB339EECEC8AA8C0FD3B08D39799D4D8, 88BB94C3CE727DB13B77ABDBDB75A4C878E91D651692F3618178DEC5BBB7080C

Physical Sector: 0
(No malicious items detected)

WMI: 0
(No malicious items detected)


(end)

---

Thank you for your support. Opera support seriously was the fastest I have ever received.

@burnout426

It detected stuff that I quarantined and restarted.
After the restart, the 'malvertising' site was blocked but it still opened.

I will try to see if I can run malwarebyte scan when in safe mode.

@leocg I just did a windows defender offline scan and the problem did not get fixed.
I noticed something new, however.
Once my computer fully turned on, a command prompt quickly opened and closed before Opera opened itself and showing me yet another random website.

What does this mean? I scanned whatever I could think of that I downloaded recently and no threat was found but this command prompt makes me think the problem is with some malware on the computer...

Hello,
I have been using Opera then Opera Gx for a very long time and I'm loving it!

But recently, every time I start up my windows 10 desktop then proceed to open Opera gx to search for something, a random tab opens by itself and it's always a random website full of ads. Like a website specifically made up to show ads.

It's getting really annoying, that every time I start my browser after turning on my computer, I have to close the random ad site that opens by itself.

I tried disabling all extensions, making a new profile, scanning Opera Gx folder with windows defender and googling my issue. Nothing so far.

So I have come here in hopes of finding help. Please!

Problem: Random ad websites open in a new tab by themselves once the browser is opened after the computer is turned on.

Steps to recreate the problem: 1. Turn off Pc. 2. Turn on the Pc. 3. open Opera Gx. 4. a random tab with random ad website open up.

Intended result: No random tab should open by itself, regardless of the content of it.

Notes: I noticed the tab quickly redirects to those ad sites, so something must be opening the tabs and once that is opened, it redirects to a pool of possible ad sites.(?)

This issue is really bothering me and I have no idea how to stop it.
And I really can't see myself using any other browser but if I can't solve the issue I'll have to start researching for alternatives (although I really dislike every other browser)

-Any help is appreciated. Thank you in advance.