I keep getting an error message saying my Broadcom device is unplugged, but all of the cables are plugged in.

If you have a spike in the power, unplug, remove the battery, then hold the power button down for 1min or 60s, to release any built up shock power. then insert the battery, (no power cord) push and hold power button for 1 -2 - 3 s. release and see what happens.. now what OS is installed on the HDD. and check the BIOS to see how the boot sequence is set... seems your error show you set to boot to NetWork not HDD

Go into the BIOS settings at boot up. Disable the option to boot from network, that must solve it :)

This WEB site may help you fix this problem.
http://forums.lenovo.com/t5/IdeaPad-Y-U-V-Z-and-P-series/Random-shutdown-and-PXE-E61-and-PXE-M0F-error-message/td-p/414755

The error PXE-E61: Media test failure usually means the hard diskhas failed or the hard disk needs re-seating or the disk controller is faulty. First - re-seat the harddisk and reboot the computer. If this does not work then reboot and go to theBIOS configuration to see if the BIOS detects the hard drive. If it doesn'tdetect the hard drive then it could be faulty. Next - to determine if thehard drive is faulty, remove the hard drive and insert it into an USB hard drive adapter and connect it to a workingcomputer's USB port. If this computer cannot see itas an external hard drive and you cannot open the various folders and files,this confirms the hard drive is faulty. Then the hard drive needsto be replaced in the computer/laptop, Windows installed and the computer orlaptop's device drivers plus your programs etc. to get a functioningcomputer/laptop again.

your drivers for network card is not updated, reinstall the previous driver and try again, could be some files for this wireless device is missing...do it

are you sure the connection in "my network places" is for that adaptor? try going to system properties - hardware - deivice manager and check the network card is properly installed there. you may need to update the drivers which u will obvioucly have to download from another computer.

Try this to find out which one of your components has an issue. Turn off your machine then unplug all of your USB cables. Turn your machine back on and plug in one of your USB cables. Verify the component you just plugged in works correctly and if it does plug in another cable and verify that component is working. Continue these steps until you have the one component that displays the error you have seen. That component is most likely the cause of your issue and should be replaced.

Good luck, Greased.

Turn off CPU, Unplug Power cable, And all usb devices, let it sit for about 20mins. Plug it all back in. Turn on the CPU!

The Broadcom PXE looks for a boot device/files from a network source if the network cable is't plugged in then you get the PXE-E61: Media test failure check cable, you can turn this off in the bios, when this doesn't find any boot information it moves onto the next boot device which is defined in the bios, usally the dvd drive then the HD. If this is a Altos server you have bought they are not supplied with an OS so it wont boot from the HD to begin with, if you already had a OS installed and it wont boot then there is something wrong with with the HD or the connectors or posibly the boot sectors are corrupted, if the device is making th tak tak noise the it is having trouble reading te device.

Make sure the light on your cable modem that represents your connection to the computer (it might be marked LAN, Ethernet, or PC) is lit up and isn't flashing. The light will tell you if your network card is properly connected to the cable modem.

If the light isn't on, make sure you've connected the wire to the right port on the cable modem, and try restarting the cable modem by unplugging it, wait 30 seconds, and plug it back in.

If it still doesn't work after that, contact your Internet provider. Their technical support department can help you get it set up.