Thanks for the quick reply .I personally never thought of memtest.

Will try this method and post back as soon as possible,although that may be quite some time later

hi everyone! so i've been trying to upgrade my R50 1829-5LB's ram to the max of 2gb. I have installed the first stick under the keyboard and it works fine,but when installing the second stick the laptop wont boot.It will just display black screen. Here are the facts: RAM:both kingston KVR333X64SC25/...