Yes, yes, I know, free lunches and all that. Trying to help a friend by repairing his sister's dead Sahara laptop. She's a nurse and still busy with her practical training. I suspect RAM failure, but I don't want to buy brand new RAM only to find the mobo's ill or the PC has some other scary affliction, so looking for a single 512 MB or 1 GB DDR2 laptop module. If it tests OK, then the machine could be worth fixing, otherwise not really worth it.