My laptop isnt working.as soon as u turn it on a black screen comes up and the message display says PXE-E61: Media test failure, check cable PXE-M0F: Exiting Broadcom PXE ROM!! how can i fix it

The system is not finding any bootable media (Hard Drive) and is attempting to boot via the network card (PXE Boot) the error message is saying that there is not PXE network to boot from and it is exiting the process.
Generally, this is caused by a hard Drive failure. Reseat the drive and or drive connections and see if the system will find the hard drive.
Generally, a Hard drive failure

"Intel UNDI, PXE-2.1 (build 082)
Copyright (C) 1997-2000 Intel Corporation


For Realtek RTL8101E/8102E PCI-E Ethernet Controller v.105 (071227)
PXE-E61: Media test failure, check cable
PXE-M0F: Exiting PXE ROM
No bootable device -- insert boot disk and press any key"


sounds like a driver issue try to go to toshiba's website and download the latest drivers for the NIC card.

The error PXE-E61: Media test failure usually means the hard disk has failed or the hard disk needs re-seating or the disk controller is faulty. Please click on this link and follow my instructions :- http://www.fixya.com/support/r4377704-pxe_e61_error

Hello.

That error message usually refers to a hard disk failure. Your hard disk cable could be loose or faulty. Or, your hard drive would need to be replaced.

I'd suggest to check the cable and run your system's hardware diagnostics (often F2 or F12) when your system boots.

Hope this helps.

check your harddrive, is it detected in bios ?
if no, it could be motherboard or hdd, but most of the time is hdd problem, so just replace it.
if yes, your operating system is corrupt, so you can reload your operating system.

your e-machine is set to boot from the network (PXE = Netboot)

go to your BIOS and make sure you boot from your hard drive

Not always the Hard drive, boot into the bios setup utility and de-select network bootfrom the boot options. If it tries to network boot first you will always get that failure.

Save your self a lot of reading, do this first.
Check in BIOS rom for start up sequence and check if there is an asterist (!) in front of the hdd. If there is, it’s disabled. Select the hdd and press shift key plus “1′ This removes the ! and you can then use the hdd to re-format or….

you have a failed hard drive and will require a replacement.