Raid 5 Verify & Repair

[howpet]

I have a problem
I"m getting errors in my raid 5 setup, now it only seems to happen while viewing websites, gaming etc, etc everything is fine. What happens is comp will just lockup and only way to get out is a reset which results in the array Verifying & Repairing, this has been happening quite often ( once a day sometimes ). Don"t know if it"s the board, intel raid controler or the drives I"m using. Can anyone offer any suggestions? Thxs.
Asus Maximus 11 Formula
Intel ICH10R
WD 640 Blacks Times 3.....64 Kb Strip Size.....Write Cache Enabled
Seems very strange to me this happens with something as simple as web browsing. Are the Raid Edition drives maybe a better choice?

[bojangles]

Any HDD will do. Did you run for disk errors? If there is a disk failure you can swap that disk out for a new one and let the array rebuild itself with the parity bits.

[Perineum]

I would run a RAM test using Memtest.

[howpet]

Thxs will try both suggestions & get back to you.

[Squeetard]

I'm thinking your raid5 and disks are fine. Any time you have to do a hard reset they will want to verify and repair. Something is causing your system to hang, that is the problem.

[howpet]

Well I ran 3 instances of memtest at 2024mb each with 115% coverage and no errors. Thxs Skueetard I think you might be on to something, system seems to be stable except for the lockup issue. If I were to reinstall windows would I loose everythig on the drives or how should I proceed
EDIT: sorry Squeetard