bios magic keys

On Boot up press these keys...

AMD, ACER   F1
Gateway F1/F2
Toshiba hold escape key while powering up, then F1
DELL
    f2 or f10 or del or escape get into the bios
    f12 to see the "one time boot menu" - choose diagnostics

boot-up and repeatedly press Ctrl-Alt-D

Press and hold the key, and then press the power button to power the system on.

Release both buttons. The PSA diagnostics sequence begins.

http://support.dell.com/support/topics/global.aspx/support/dsn/document?c=us&l=en&s=gen&docid=126A722713F6D0D0E0401E0A55174AE6&journalid=4D2C9EDE95BFAC27E040A68F73286BDF&Query=&SystemID=&ServiceTag=&contenttype=&os=&component=&lang=&doclang=&toggle=&dl=#3

Dell portable computers now have the Drive Self Test (DST) included in the BIOS as part of the Preboot System Assessment (PSA) diagnostic suite.

1000-0141
or
2000-0141   No Drive Detected
1000-0142
or
2000-0142   Drive Self Test Failed Status Byte=XXh
1000-0143
or
2000-0143   Drive Smart Read Command Failed
1000-0144
or
2000-0144   No Support for Drive Self Test
Error Code  Error Message
1000-0145
or
2000-0145   Timeout waiting for Drive Self Test to complete
1000-0146
or
2000-0146   DST Log contains previous error(s)
1000-0147
or
2000-0147   Unit (x): IDE status failed. Status byte = (x) Control Code = (x) Msg = (s)
1000-0148
or
2000-0148   IDE ERROR: status (x) (s)

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