Laptops have a VERY restrictive Bios. The best of my knowedge is that YOU can not disable Memory. Also Do not think there is an animal called BIOS memory.
Need to find why bluescreen.
It could be the Ram (Memory).
To test memory to see if this is the cause. Download memtest 86 ISO and create a Bootable CD. Insert CD and boot to CD. Run memtest for 4 to 6 Hours. To test your Ram. If memory errors you will brobably need to reseat and RETEST, or replace ram.
NOTE - Do not Just copy the file to a CD like normal data files, need to select ISO function.
PS I normally use IMGburn to write to CD/DVDs.
If No errors, then you mostly have either a bad, or incorrect driver loaded in windows, or a Corrupt file.
If you have a windows Installation disk you can try booting to the win 7 disk and select repair to see if windows will fix the problem. If you can not repair, most likely you will need to re-install windows - providing the HDD is not failing (see below)
Another possibility is the HDD is failing and has corrupted files on it - If this is the case then a New HDD is inorder, and a RE_INSTALL of windows.
To check HDD, got to HDD Manuf web site and down load a bootable HDD utility to test the drive.