Inscrit le: 15 Nov 2017
|Posté le: Lun 4 Déc - 11:32 (2017) Sujet du message: HP ProBook 6450b Suddenly Powers Off \
|I’ve got a HP ProBook 6450b, running Windows 7 Professional, which I purchased used almost exactly 90 days ago, and which I suspect was a lot of corporate laptops coming off lease that were being excessed. The laptop’s performance in the first 90 days has been nothing less than satisfactory during that time.
In the last 24 hours the laptop has been exhibiting some disturbing behavior. My wife was using the laptop and she described that the laptop just lost power and shutoff – not unlike if it was running on its battery and the battery was suddenly disconnected. When I attempted to restart, the laptop displayed the diagnostic screen which indicated that the laptop had unexpectedly shutdown, with the option to Start Normally, or to run a Repair Diagnostic (Recommended) – which I opted to do. The repair diagnostic ran (for a quite a long time), and then suddenly powered off. When I attempted a second restart, the laptop status panel lights illuminated briefly, the ventilation fan powered up, and then went dark.
A number of hours later, I attempted another restart, and to my surprise, the laptop successfully ran through the Post-Test, initialized the operating system and loaded all the way to the Desktop. A few minutes/seconds after that, the laptop shutoff again.
This series of events told me a couple of things. First, the laptop is able to be powered-up, can run through the Post-Test, and the hard drive is functioning and accessible and capable of loading the operating system, the battery is displaying as being fully-charged, the ventilation fan is running and the laptop is successfully booting up.
So, I’m pretty adept at computer repairs, having disassembled (and thankfully reassembled) successfully a number Dell laptops, and replaced display screens, hinges, hard drives, keyboards, and base units. I have no experience with HP laptops, but I will assume they are of very similar construction and complexity (or simplicity), so I’m willing to undertake repairs in this neighborhood myself. I’m less inclined to engage in speculative repair and parts replacement, however I’m willing to walk down the "repair road" with anyone that can cite having a similar experience or a pretty clear direction to go next.
Any initial recommendations based on what I’ve provided?
I didn't find the right solution from the internet.