No response when 0 free memory (all cached)

G'Day All,
New to this forum & replies seen are of high quality so hoping you can help.
I bought my PC 12 months ago & it ran well for 12 months until some random BSOD, etc. So I reinstalled from scratch & everything was perfect for about 3-4 weeks until it kept freezing. We mainly use PC for PSE Organiser & Editor - nothing else of any substance. So in PSE8 when scrolling through lots of photos or doing lots of editing it works great for a while then stops. It seems the cached memory is NOT being released & so free = 0. What could cause this & why would I only have problem this install & not last? The only other app's installed are GoodSync, N360 & MS Office 2010. Screen shots attached of;
1 & 2 - Task Manager showing the 10min of non response & no cached memory released.
3 - Task Manager showing that if while frozen I try to page up or down through PSE CPU jumps to 100% then drops back to near nil again. Whole PC freezes too, not just PSE.
I could always reinstall again (per Dell or Adobe's great help) but certain there is another answer or things to try first.
Hoping PC specs post automatically - if not I'll put in next post.
Cheers All,
Flano..

Hello flano77 and welcome to the Forum. Have you run Check Disk? There are also several free diagnostics to see if you have a failing hard drive.

Hard Drive Testing Tools - Top 7 Free Hard Drive Testing Tools - Hard Drive Diagnostics

Hi marsmimar - yep - have now No bad sectors or similar found though.

Hi Dwarf - 2. Nope paging file not disabled - enabled for 9GB. 1. Yeh we only notice it after using PSE for a while. But we have nothing else on the PC to use any sort of RAM or CPU!! Outlook & Internet are only other remaining things used a lot. PSE was working perfect for past 12 months on exact same hardware (pre reinstall).

Thanks Dwarf - Yep paging is Auto - Yep I mean PhotoShop Elements 8. There are no updates for PSE but yes new version. PSE8 worked fine til now though. Not buying PSE9 just to see if that works. Could it be something completely unrelated to the cached memory, etc causing it to freeze? Just seems to work fine until Free Memory gets down to 0 (time to get there depends on what I'm doing - editing photos I get there quicker).

How are the internal temps? Try running free speccy to monitor temps, especially for GPU.

CPU 43, HDD 33 - these are OK aren't they?