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USB Drive keeps disconnecting

tereso

New Member
Messages
1
#1
I have a very weird problem wiht my Vista Ultima x64. When I connect an USB flash drive to any USB port on the system it installs the drivers the first time i plug it in, the drive letter appears, the autoplay menu pops ups, and the it disconnects and connects again. If I use an MP3 player, it restarts, as if it were plugged off an on. I am using a C2D 8400 on an Asus P5N-e SLI bios version 1002, 4GB supertalent DDR2 800. It´s not a motherboard/chipset issue because the same thing happened with the exact same setup but an Asus P5KSE motherborad wich i swapped with the P5N-E SLI. It seems to happen with non-powered Drives, because I have an external USB hard drive with its own power supply that works, and my Nokia N91 cellphone works too. Any ideas?
 

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sidney1st

Member
Vista Guru
Messages
968
Location
Paris
#2
Click Start, in the search bar type in: devmgmt.msc then press enter.
Have a look in your USB Root Hub properties/Power management and verify that the "Allow the computer........ is unticked.

 

My Computer

McKim

New Member
Messages
12
Location
England
#3
I have also had the same problem. Except I am on Vista Home Premium 32bit. I bought a 200gb external hard drive to backup my documents and store all my music on because it took ridiculous amounts of space on my internal hard drive of my laptop. The external hard drive worked fine for ages, then it started randomly disconnecting itself of its own accord. Now its doing it every few seconds so I can't access my files. Google led me to this thread and I know all 3 of my USB ports work just fine because my printer, camera and phone have all worked on them. So I followed what Sid said, but it didn't make one iota of difference. It still disconnects and reconnects of its own accord. I've also scanned the drive for viruses and the like and it came back clear.

Does anyone have any ideas?

Regards,
Kim
 

My Computer

System One

  • CPU
    520 @ 1.60GHz
    Memory
    2039MB
    Hard Drives
    120gb internal
    200gb external

sidney1st

Member
Vista Guru
Messages
968
Location
Paris
#4
Well, is it a 2.5 hdd tpe powered by the laptop or a 3.5 hdd type with its own power supply?
It looks like if the hdd does not have enough power to work.
 

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McKim

New Member
Messages
12
Location
England
#8
I've tried it on my home PC that runs on XP Home and it's fine. Connects and stays connected.

I guess it must be a Vista problem. Any more ideas?
 

My Computer

System One

  • CPU
    520 @ 1.60GHz
    Memory
    2039MB
    Hard Drives
    120gb internal
    200gb external

sidney1st

Member
Vista Guru
Messages
968
Location
Paris
#9
Just a test, have a look if you do not have any probleme with the AC plug of the room where you use your machine, so just try to plug your hdd somewhere else.
 

My Computer

McKim

New Member
Messages
12
Location
England
#10
Already tried and tested, doesn't make a difference. I went on the Microsoft support website and it said to download SP1 so I'll try that and see if it makes a difference. Other than that I'm at a complete loss.
 

My Computer

System One

  • CPU
    520 @ 1.60GHz
    Memory
    2039MB
    Hard Drives
    120gb internal
    200gb external

McKim

New Member
Messages
12
Location
England
#12
So did I but the Microsoft website said that it should say if I have it when I go to Control Panel>System. But it doesn't say. So I figured I don't have it. Also, I checked the Windows Update History and it doesn't mention having Vista SP1. But my laptop just crashed so I'm going to leave the download til tomorrow cos its going to take 4 or so hours to download. But I'll let you know how it goes. Cheers for all your help :)
 

My Computer

System One

  • CPU
    520 @ 1.60GHz
    Memory
    2039MB
    Hard Drives
    120gb internal
    200gb external

McKim

New Member
Messages
12
Location
England
#13
For some reason SP1 refused to download to my laptop. So I thought I'd leave it. I thought I ought to transfer my files from my external hard drive to my old XP PC. So I did. It wasn't even connected for five minutes before it disconnected. As its now happening on two different instances of OS, I'm guessing its the hard drive itself that is the problem.
 

My Computer

System One

  • CPU
    520 @ 1.60GHz
    Memory
    2039MB
    Hard Drives
    120gb internal
    200gb external
Messages
1,823
#14
Remove all USB drives and restart. Then, download network install SP1 file.
 

My Computer

System One

  • CPU
    pair of Intel E5430 quad core 2.66 GHz Xeons
    Motherboard
    Supermicro X7DWA-N server board
    Memory
    16GB DDR667
    Graphics Card(s)
    eVGA 8800 GTS 640 MB video card
    Hard Drives
    SAS RAID

McKim

New Member
Messages
12
Location
England
#16
It didn't work. Vista SP1 installed and restarted. I plugged in my External HD and surprise surprise it still keeps disconnecting. I give up!
 

My Computer

System One

  • CPU
    520 @ 1.60GHz
    Memory
    2039MB
    Hard Drives
    120gb internal
    200gb external

McKim

New Member
Messages
12
Location
England
#17
Hurahhhhh!!!!!! I think the problem is now fixed. I was hunting on other threads on here when I came across a link for the HP website.

So I followed these instructions:

Shut down laptop
Leave for 10 seconds
Restart
As soon as first screen appears press F10 (although on my laptop its F2)
Use arrow keys to get to the Advanced tab
Use arrow keys to get to the USB Legacy option and press Enter
Choose DISABLE and press Enter
Press F10 to save and exit
Laptop will continue to start up in the normal manner

After Vista had loaded, I reconnected the external hard drive and it stayed connected long enough for me to rescue my files. Then I disconnected it. Fingers crossed it works now. I shall have to try for longer periods to see if it will.
 

My Computer

System One

  • CPU
    520 @ 1.60GHz
    Memory
    2039MB
    Hard Drives
    120gb internal
    200gb external

ruggb

New Member
Messages
2
#18
just a thought, did u have it connected with a split cable so that u could plug it into TWO usb ports on the computer??????????

Most 2.5" drives will barely run and yield weird symptoms if only one port is powering it.
u could use just one USB3 port since it supplies a lot more power.
 

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