Trojan Horse Crypt4.BBEW Possibly Damaged Computer

[Pwnsomemcpie]

Hello, I recently discovered 3 Trojan Horses, all with the name "Crypt4.BBEW". All of them were located in the file path C:\Windows\Installer\9cbf203.msi. I found some issues very similar to mine on the forums, but none of them seemed to have the same problems as me. Also note that before I scanned and found these bits of malware, my computer screen was black and would not light back up, despite the lights on my tower being on. I reset my computer following this, and found that everything about my computer was significantly slower, including typing delay, games, and mouse movements. I am running Windows 7, specs below.
*UPDATE* My windows turned out to be corrupted, but now I have another issue, regarding my mouse and keyboard not working during a clean reinstall. Thanks for your feedback, everyone.

Motherboard: MSI MS-7845
Processor: Intel(R) Core(TM) i7-4770k CPU @ 3.50GHz (8CPUs)~3.5GHz
Memory: 16384MB RAM
GPU: NVIDIA GeForce GTX 980, 4095MB

 

[Blaise170]

Download and install Malwarebytes Antimalware. Run it and clean it up. If you do not have antivirus, download and install Avast Free and also scan with it. If you still have issues, report back the problems.

 

[Pwnsomemcpie]

Download and install Malwarebytes Antimalware. Run it and clean it up. If you do not have antivirus, download and install Avast Free and also scan with it. If you still have issues, report back the problems.

I ran malwarebytes and AVG, and the threat seems to be removed, although my computer is still running very slow. Could it be from the reset I had to do when the screen was black?

 

[CWEric]

Probably. Run some more:

http/www.bleepingcomputer.com/download/tdsskiller/
http/www.bleepingcomputer.com/download/combofix/
http/www.bleepingcomputer.com/download/roguekiller/
http/www.bleepingcomputer.com/download/junkware-removal-tool/
http/www.bleepingcomputer.com/download/adwcleaner/

 

[Pwnsomemcpie]

Probably. Run some more:

http/www.bleepingcomputer.com/download/tdsskiller/
http/www.bleepingcomputer.com/download/combofix/
http/www.bleepingcomputer.com/download/roguekiller/
http/www.bleepingcomputer.com/download/junkware-removal-tool/
http/www.bleepingcomputer.com/download/adwcleaner/

I ran all of these, and only Adwarecleaner found a lot. However, some of the files and items found in the registry for instance, seem normal. Some of them begin with a sequence of letters such as HKLM\Software, etc. It also falsely detected AVG as adware. I don't know if I should delete some of these things, they seem important.

 

[CWEric]

Not avg, someone else reported a false positive on avg processors from roguekiller I think. Registry is up to you but I would do it.

 

[Blaise170]

HKLM is the registry. I'd try CCleaner as well. It sounds like there are lingering bits of code that could still be causing problems.