I logged onto my Windows 7 PC today and found that it had restarted overnight to install some updates. After maybe 4 or 5 minutes, I noticed the computer was being really slow, and something was taking up 95% of of my RAM. I opened task manager to see that there were literally hundreds of copies of javaws.exe running in the background. After a few minutes spent trying to look up the problem, I reset the computer and did a boot scan with Avast, which found nothing. The problem happened again after I logged back on, so I used JavaRa to uninstall all versions of Java, and the problem stopped. I then performed a scan with Malwarebytes, and it found nothing. I recognize that this may not apply to my computer, but someone mentioned a keylogger when addressing a similar problem, so I’m a bit worried.
You can never be too safe when it comes to keyloggers. https://forum.avast.com/index.php?topic=53253.0
Hi alienbutt99, welcome to the forum 
Please follow the directions from the link Michael posted above, and attach the requested logs in your next reply.
As soon as an expert is online and available he/she will help you.
Greetz, Red.
Sorry about that. Here are all the requested files.
Nothing evident showing, what may have happened is that the Java update task got caught in a loop
CAUTION : This fix is only valid for this specific machine, using it on another may break your computer
Open notepad and copy/paste the text in the quotebox below into it:
CreateRestorePoint: BHO: No Name -> {41edcba0-cb7c-463e-8b52-9b09edbb8534} -> No File BHO-x32: No Name -> {41edcba0-cb7c-463e-8b52-9b09edbb8534} -> No File BHO-x32: No Name -> {5C255C8A-E604-49b4-9D64-90988571CECB} -> No File Toolbar: HKLM - No Name - {318A227B-5E9F-45bd-8999-7F8F10CA4CF5} - No File Toolbar: HKLM - No Name - {CC1A175A-E45B-41ED-A30C-C9B1D7A0C02F} - No File Task: {ED848FB3-CD50-47AE-9A68-3C618C4E5FC3} - System32\Tasks\off Task: {F4B7394E-6CB4-4BA0-8C70-FFEF7FAF0096} - \Optimizer Pro Schedule -> No File <==== ATTENTION RemoveProxy: EmptyTemp: CMD: bitsadmin /reset /allusers
Save this as fixlist.txt, in the same location as FRST.exe
https://dl.dropboxusercontent.com/u/73555776/FRSTfix.JPG
Run FRST and press Fix
On completion a log will be generated please post that
Done. Here’s the log.
How is the computer behaving now ?
It seems fine. No problems so far. Should I try to reinstall Java?
Do you actually need Java ? I have not had it on my system for a few years now
A lot of games still use Java, but I guess I don’t really need it, so nevermind.
Try for a while without it, if you do find you need it then re-install. But, java is one of the most commonly attacked programmes
Will do. Thanks for your help!