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- HP Community
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- Laptop Won't Boot. Caps Lock Button Light Blinking

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06-20-2015 05:17 AM
Take the CMOS battery out and leave for three minutes, boot up and you'll get a CMOS reset error, hit return and it boots successfully. Shut windows down, replace CMOS battery. Job done.
Hope this helps.
07-20-2015
12:08 PM
- last edited on
04-26-2017
04:15 PM
by
Omar-E
Yay! Thank-you dangater! I had trawled the www also, and tried the troubleshooting steps for Win81 black screen, HP laptop troubleshooting steps https://support.hp.com/us-en/document/c05336130 (Link Updated 04/26/2017) several other tips from this forum, and then called HP. Since my warranty had expired several days earlier, I was loath to take this step... but since my laptop (Envy TS m7-j178ca) was useless I hoped the help cost would be less than buying a new laptop. HP service was pleasant, walking me through all of the troubleshooting steps (again), eventually concluding it was a hardware fault so set me up to return my laptop for repair ($251.98). While I was waiting for the return package I read through more HP forum responses, and voila - your solution (disconnect CMOS battery) worked! I called HP; they immediately cancelled my case and refunded my payment without grief.
As was mentioned in another post on this forum, it seems a key step or two should be included in the HP self-help troubleshooting guide before they conclude "call HP"; which means paying for telephone support (out of warranty cost) or shipping it for repair - no doubt with the same results you experienced (no fault found), but laptop working fine when it gets shipped back. Easy $250 for HP.
Thanks again for posting your solution.
07-20-2015
12:57 PM
- last edited on
04-26-2017
03:00 PM
by
Omar-E
bigmike160 Same problem on my Envy, including HP offer to repair for $$$. Ultimately it was the solution posted by dangater: disconnect CMOS battery, restart, shutdown, reconnect battery). I had previously followed troubleshooting steps "HP Notebook PCs - Computer Starts but Screen Remains Blank (Windows 😎"; determined the blink code https://support.hp.com/us-en/document/c05336130 (Link Updated 04/26/2017) (but couldn't do anything because the screen remained black); used dust remover spray to clean intake, exhaust/fan ports; and called HP (1-800-474-6836, navigate several voice prompts).
07-22-2015 11:43 PM
Okay, so if I can't get the computer to boot up, how am I supposed to go the site and update the BIOS? That makes no sense to me at all! What am I missing?? Please help - this is for my son's birthday computer that I bought him less than a year ago. Such a shame!
