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As soon as i connect the mains supply green light on front panel comes on then out then red front panel flashes four times then wait then four times etc...

As soon as i connect the mains supply green light comes on then out then red light flashes four times then wait then four times ...

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  • bray273 May 20, 2009

    thank u for your help i did look at the hp website but came to a dead end when it sujested compleate replacement!!! as it is a small form pc the psu is speicial size so i got down to it and repaired it myself (switch mode controler ic bad) now working ok BUT boots up then says 'clock battery low needs replacing ...reolace and set time and date in your op system'. ive replaced the battery tried to set the date in the bios still get the same message ...cant set the date in xp as xp will not load all i get is the windows screen with the loading bar running then back to the error message... any ideas??? regards geoffrey

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  • Compaq Master
  • 4,338 Answers

Here is a HP/Compaq document to help you diagnose the issue:

http://h10025.www1.hp.com/ewfrf/wc/fastFaqLiteDocument?lc=en&cc=uk&dlc=en&docname=bph06788

Click on this link or copy and paste the complete link into your browser.
If I could be of further assistance, let me know. If this helps or solves the issue, please rate it.
Thanks, Joe

Posted on May 16, 2009

  • JDTec
    JDTec May 20, 2009



    Power off the PC......

    Take the battery out and short the 2 connections in the battery holder. Then replace the battery, power up and set the time in Bios. Date and Time should stay permanently.

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