I have searched for hours on the internet for this issue and read 100 or more pages, none of which have given me the answer. Maybe, just maybe, somebody here has the solution...
I'm running Windows 7 on an i5 2500 @ 3.3Ghz.
4GB RAM (2x2GB paired Corsair)
1TB SATA drive with 3 partitions
AMD 7750 Graphics card, 2GB dedicated DDR5 memory
For the last 3 months or so:
On startup, most of the time it takes at least 5 minutes before I can type anything. In this time the keyboard responds but at about 1 character every 10 seconds. My keystrokes get buffered and arrive eventually. This is Chrome, Notepad, everything. This can also happen periodically when the machine has been on for hours.
The Windows start menu is slow. I can click on options 3 or 4 times before they register as a click.
Programs can take 2 minutes to start fully. Others can start as expected in a few seconds.
Right-clicking in Windows explorer can take 10 to 15 seconds to respond.
USB devices can take 30 seconds to register.
While getting the info for this, the Computer properties screen took about 30 seconds to display properly. Id I do it a second time, it takes 5 seconds.
While all of this is happening, System Idle can be at 96-99%, mostly on 99%.
I've replaced antivirus (switched between Windows Defender and AVG)
Graphics card has been replaced (not because of this issue)
Hard drive defragged
2x Memory tests run (Windows and MemTest86+), no problems reported
Startup programs disabled
Services disabled
CCleaner run
Temp files deleted
Registry cleaned
Help!