Laptop not recognizing USB Hard Drive

[natboy]

Computer does not recognize USB Hard.Drive. HP Pavililion Laptop. Hard Drive works fine on other laptops. Main computer's Hard Drive is at 92% capacity.

[iam_clint]

Make sure your usb drivers are up to date. Try another Usb cable.

[Rabbit]

Make sure the it's using an availble drive letter in the disk manager.

[rollerbladegirl]

If your HP Pavililion Laptop has a 32 bit operating system with a Master Boot Record and your hard drive has a PBE (Pre-read everything on your drive before you see it, and report results to someone else without your permission, "Pre-Boot-Environment") then the hard drive might be refusing to allow the HP to see it's files.

If your exterior hard drive has a TPM "Trusted (ha ha ha) Platform Module" installed, and if it clashes with your HP's TPM for some reason then you might not be able to see (be "allowed" to see) the exterior hard drive.

Have you tried networking the HP to another laptop that actually does allow access to the exterior hard drive and tried to see it from the HP, through that other laptop?

If they are yours and you own them that try that. Otherwise do not. Do not do such things with what you do not own. A TPM on one hard drive, connected to another drive, has been know to infect the second hard drive with TPM. Backup all systems before attempting such even if you do own them.

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[Naheedmir]

Check your USB in all pen drives and check if it works in any pen drive. Also, update the USB driver from the device manager, sometimes the USB driver is not updated; that's why it happens.