How to mend Dell Optiplex Gx280

i ve dell d600,when i on it,it wil get to dell logo and freze but if i presed it thightly,it wil boot up.what should i do to solve dis hanging stuf thanks to al?

no dvd rom /device start up = press f1?

wireless connection?

how do i reboot my t3410 w/o a recovery disk?

how can i fix my dell laptop power?

how can I fix the light on the back of the tower on my desktop dell compute?

mend my computer speakers ?

Clicking DVD player?

Dell Dimension 5000?

Power Adapter light flashing?

pluged in but not charging?

How do I repair my LP5 problem?

pluged in but not charging?

dell xps?

dvd burner to dell optiplex 980 small case?

Computer Dell Laptop Lattitude D600?

how to fix a broken computer screen?

windows xp re-install (2)?

DELL optiplex gx270 (xp)reinstall?

Where can I get missing driver for Dell Dimension 9200 TV card?

Google Earth will not do DirectX?

computer not protected when booting up p.c?

optiplex 980 sff -does not recognize modem?

how to mend dell laptop powerup problem?

network problem?

Power light flashes but computer wont turn on. Any Solutions?

i have a dell pc it freezes up won't load?

my browser is to big for sreen how do i fix this dell dimention 2400 ?

can I replace broken glass on my desktop computer?

i forgot my loggin imformation my dell d520 can you help me?