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Unfortunately it does sound like you may have contracted a Virus or a type of Malware.
Best way to remove the typse of Virus's that make your computer SLOW, and unresponsive....is to use a BOOTABLE virus scanner and removal tool. COMBOFIX is a tool many professionals use.
Do you share this computer with OTHER people? Is this kind of like a public house computer?
YOu have to use a DIFFERENT COMPUTER to download combofix.
Then, you put combofix on a USB drive, and make it bootable.
Then you boot the problem computer using the USB drive that has combofix on it.....it will scan and TRY to delete any Virus you have on the problem computer.
So...hows it going?
If you WIPED your computer...then you WOULD have wiped the virus as well.....Did you actually WIPE the drive....or did you just reinstall windows? In order to WIPE a drive, you have to delete the partitions, and create NEW partitions. Did you do this?
Oh...okay...gotchya....i thought you meant that after you Wiped your computer, that you STILL had the problem......and thats why i mentioned the partition thing.
But that is AWESOME.....your good to go now then YES? Computer works again, like it always did?
Sure thing....you are most Welcome.....please take a moment to rate my performance. and have a great day!