My system specs:
Operating system: Windows 8 64-bit (6.2, Build 9200)
System manufacturer: ASUSTeK COMPUTER INC.
System Model: K56CA
Processor: Intel® Core i5-3317u CPU @ 1.70GHz (4 CPUs), ~1.7GHz
Memory: 6144MB RAM
The first time I noticed trouble was Thursday. As I was searching for someone on Facebook, Firefox would crash. If I reloaded Firefox and went to Facebook to do the same, it would crash again. I don’t remember every event after this, but I then encountered problems where I would try to open any program, even windows explorer, and I would get popup messages saying something about dll error, or something about not having a valid image.
I thought I was infected at this point so I ran avast free virus scan; after only a few minutes in it said it had found about 171 infected files. I then clicked on the statistics button in avast and the entire thing froze up. Then my computer froze up, so I had to force it to shutdown by holding down the power. I had to do this a few times before I was able to finally get in and run avast again. The thing is, this time it did a complete scan and said it found ZERO infected files. Why would it say it found some initially, freeze up, only to find none the next time?
I Thought I was out of the woods, so I bought the full version of avast to better protect myself in the future. Only to later find I was still having these dll error messages pop up.
I later began experiencing a blue screen that said something about my computer having problems and that it did not shut down properly, the blue screen led to my computer running some kind of scan to repair.
Over the next few days I ran malwarebytes, avast, cccleaner, combofix.(I know, I did this before reading this site) Still no serious improvement.
I was able to do a system restore yesterday.
Last night when I went to shutdown my computer, it would almost shut down, only to force a restart. This process was never ending. I tried to uncheck the fast start option; still no solution. I ended up updating some qualcomm driver which then allowed my computer to fully shutdown.
Thinking all might be well, I woke up this morning to turn on my computer. When I turned it on and logged in, the screen was flashing. There were no desktop icons or desktop background, just a blank background with the taskbar showing and constantly blinking on and off. I was able to start task manager an d saw that Malwarebytes was using a lot of resources so I forced it to end and the blinking stopped and I was able to restart and log in normally.
I don’t understand why these scanners are finding no infections, and yet I continue to have these problems.