hi friend,
first you have to know it's not the 512 kb it is an 512 MB. If it is the laptop there may be the two slots in the corner of the slot you see the knob press it slidely the knob on the both side after remove as the same process to put new ram on the slot but before that see please check if your computer or the laptop is supports the 2GB ram . you can see the manual of the laptop or search the web or ask the shop where you buy the laptop. these are steps for ram. try it , and if problem comes again ,please inform to fixya.com
bye.
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