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‎02-03-2025 07:31 AM - edited ‎02-03-2025 07:32 AM

HP Recommended
Product: HP ProBook 4540s Notebook PC

I recently found my old HP Probook 4540s. i was in love with this machine and it worked completely fine before i put it away. now it wont post, i plug it in, the battery charges, it powers up, but the screen stays black,(not on, backlight is off) the caps lock key is flashing continuously and the network light glows amber.i tried new RAM, new ssd, cleaned it, new thermal paste, i used a different charger, i even tried flashing the bios, however it wont let me in, i tried win+b, win+v, b, to no avail. all i didnt do yet is replace the cmos. any help?

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