Question about HP RT935UAABA - HP Compaq dc7800 Convertible Minitower PC Desktop
Per HP, you are using the wrong power supply, or the power supply is overloaded; should be 19.5v 135W with "smartid"
Posted on Oct 30, 2011
4 Beeps: System timer failure
Explanation: There is a problem with one or more of the timers used by the system to control functions on the motherboard.
Diagnosis: This is usually a motherboard failure.
Time for new computer.
Posted on Jan 11, 2009
Solution easy 1 remove fan (or metal thing for refrigerator)fron northebidge chip 2 changed the termal paste 3 remove all memory (unplug machine first) wait 3 to 5 minutes before put them back 4 star pc without memory ram until hearing fan loud 5 turn off pc 6 put the menory back and wahla working fine........ work for me i hope this work for you too!!!!! computer operating 4 year of colleuge in computer
Posted on Nov 02, 2015
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