It could be hitting hard to read areas of the drive. Yes, most folk won't replace a drive that works until it does not. Let's hope it fails hard so to move on faster.
The other issue is the system looks to be dated. The CPU arrived in 2008 so I expect the performance to be circa 2008 and with the HDD issue, only time will tell if you can try another HDD.
One month ago, coming back home, I found my pc would not even get me to the desktop (No Signal error after windows loading screen), it wasn't the first time, so like usual I unplugged most of the components, cleaned dust, and painfully, reboots after reboots I managed to get to the desktop, but everything was rather slow, scrolling through web pages was a bit laggy, and most video games had huge fps drop, as a well as a laggy feeling, streaming is also slow, but works almost fine.
After trying some solutions, without success, I decided to format my drive and get a new clean Win 7 64.
But the general slowdown is still there, most of my games only run smooth with low graphics and the laggy feeling is still there.
I watched my processes in the task manager, and except ZoneAlarm which is notably memory-hungry, everything's fine. I also scanned for malwares, installed new drivers for the GPU but nothing seems to work.
Here is my Config:
-ATI/AMD Radeon HD 6770
-Intel Core 2 Duo E7200
-MB: Gigabyte G31M-S2L
-2048MB x2 DDR2 Transcend RAM
-750GB Samsung HD753LJ
any help is greatly appreciated, I also downloaded some monitoring tools (CPU-Z, HWINFO..etc) and CrystalDiskInfo marked my HD health status as " CAUTION " but I don't have a clue myself.
Thanks for reading