Windows 7 Laptop Sometimes Doesn't Recognize USB Devices?
Feb 3, 2011
I am running an HP Compaq 8510w with Windows 7 Enteprise. When I first got the laptop the USB ports didn't recognise devices when they were plugged in, and the laptop would just hang when shutting down (on the Windows Shutting Down screen), so I decided to reinstall the OS as there was a lot of unnecessary applications installed.
I've been using the laptop since the rebuild and all has been good, until the past week or so when the same two problems have materialised again - when I attach a PSP, or a printer via USB, they are not recognised. And when I shut the laptop down, it hangs on the Shutting Down screen.
What checks can I run to see what the cause of this might be? I've not really installed a load of software on here, and I can't think of anything specific that I may have done that would cause this...
My netbook that uses windows 7 starter cannot detect any of the flash drives and has display troubles cause everytime restart its display will be in windows classic. Should I take it to be repaired??
my laptop acer aspire doesnt recognize my external hard drive in windows7. I will be great ful to them. it doesn't show any external hard drive but it shows pen drive and mobile usb cable but not external hard disk
my computer is Toshiba satellite L300. It has a problem of not recognizing any devices. At first my usb ports were having power cause the mouse was lighting when i put it on the port, but now nothing is happening.
I just recently installed windows 7 home premiuim on my windows vista home premieum computer. When my computer booted up with windows 7, everything worked perfectly and had no problems. I turned off my computer for the night and the next morning when i went to turn on my computer, none of my usb 2.0 devices (mouse, wireless adapter, etc.) worked. The only thing that does work is my keyboard and its a PS/2 keyboard.
i am trying to backup files and programs to an external hard drive. and a messages comes up saying "one of the USB devices attached to this pc has malfunctioned and windows does not recognize it.
There are several problems with HP Mini netbook. First among them is that programs keep freezing. It seems to start up normally, but shortly after you launch any program (even explorer or the control panel), it hangs. This means among other things that I can't get into Device Manager to look at things like drivers because I can't get there before the freeze sets in. When it happens I can still get to the toolbar and use the start menu and so on, but if I try to launch any other programs, nothing happens. Also I can't force the shutdown of the "hung" programs.
I figured this sounded like a Class A virus situation, so I tried to download some tools like AVG. The Freeze got me, using both IE and Chrome. I tried loading up my USB Thumbdrive (full of troubleshooting tools). The HP won't admit that it even exists, and the access light on the stick never blinks. An external USB HDD available, so I hooked it up. Again, not even rejected, just ignored. The HP will recognize an external DVD drive, but refuses to let me write anything to a black disc. In fact when I try the drive disappears altogether.
dell xps gen 4 running windows 7 (32 Bit)after downloading the latest windows updates, front and back USB ports no longer recognize the USB devices that were plugged in before. The usb device drivers no longer automatically load. usb ports recognize unknown device but device does not function (USB wireless Keyboard/ mouse or external hard drive) I deleted last few updates, re-booted computer and still get same result.
Synopsis: PSU died, replaced PSU with different model, system boots to bios successfully but does not recognize any devices in SATA ports, nor do those devices appear to be getting power. Now can't even get to BIOS, entire PC flicks on and off repeatedly as soon as I turn the PSU on regardless of whether I hit the power button on the front of the computer.
System Specifications
Original PSU that died: SeaSonic M12II 750 SS-750AM 750w PSU CPU: Intel Core i5-3570K Ivy Bridge 3.4GHz GPUs: ASUS 670 non-top version, SLI (2x) MOBO: ASRock Z77 extreme 6 RAM: Mushkin Enhanced Blackline 8GB (2 x 4GB) SDRAM DDR3 2133 Optical drive: Sony AD-7280S-0B 24x SATA Internal DVD+/-RW Drive SSD: SanDisk Extreme 240GB SATA 6.0 Gb-s 2.5-Inch (OS is installed here) Storage drive: Western Digital Caviar Black 1 TB SATA III (This was not connected when power supply died)
Detailed explanation:About a week ago my PSU (Seasonic 750w) died randomly while the computer was left running in sleep . I RMA'd the dead seasonic. In the mean time I happened to come accross an extremely good deal on a new PSU, so I bought it (Thermaltake smart m850w PSU) to have a backup and to get my machine working again. I hooked up the new PSU to GPUs, CPU, fans, ATX power connector, and to all of the SATA devices, (the SSD, the HDD, and the Optical drive). I made sure to connect the data cables to the SATA devices in the same configuration they were in when working properly. The computer boots successfully to the ASROCK BIOS, all fans spinning. However, I get the error code "A6" on "dr debug" (the led display on the mobo). The manual says this means "SCSI detect". I have no idea what that means.
I was able to load the UEFI, and bios recognized all components except for any of the SATA devices--(SSD, the HDD, and optical drive not recognized). The RAM, GPUs, processor, and fans were detected. At this point I was stuck in BIOS because I couldn't boot off anything.I did not have the HDD connected when the PSU failed, but now the BIOS won't read that either. I don't think any of the SATA devices are actually receiving power. Again, the UEFI showed that there were no SATA devices connected to any port, when in reality they clearly were connected both by power and data cable. Then things get really strange. I unhooked all of the SATA devices except the HDD (the one that wasn't hooked up when the original PSU died). I plug the AC into the PSU, then turn on PSU (not the power switch for the computer, the switch on the PSU). The computer starts flicking on and off in this weird rhythmic pulsating pattern "click...click...click...click..." with about a 1/2 second between each click. Each time the power flicks on, the LEDs come on and the fans spin briefly. The strangest part is that I don't need to hit the power button on the front of the case for this to happen, it just starts as soon as the PSU is turned on. In fact, I can't get the computer to turn on at all--the switch on the front of the computer appears to be dead.
1. Unplug the power cables from everything and re-seated them.
2. Reseated the data cables to the optical drive and the SSD on the drive end, not on the MOBO side as they are covered by my GPUs and I would have to take them out in order to do that.
3. Tried hooking up a SATA power cable from my old modular PSU and using that in the new PSU in an attempt to power the optical drive (didn't work, I know, bad idea--I learned you aren't supposed to do this shortly after I tried it)
4. Setting all preferences to default in the UEFI.
5. Disconnecting the power cables from one or both of the GPUs.
I think that this is either a problem with (1) the motherboard, (2) the new PSU, (3) all 3 SATA devices (unlikely). The fact that I can't even get into Bios anymore tells me that this may be a MOBO or PSU issue.My main question is how to procede from here? I suppose I can wait for my Seasonic to come back from RMA--perhaps that will clear up the issue. I just can't shake the feeling that this is a MOBO issue though. I am worried that if I keep screwing around with it I may end up frying my CPU and GPUs. I can eat the cost of a MOBO or PSU if necessary, but I can't afford to buy a new processor and two new 670s.
I have been using my WD External Hard Drive in my new Windows 7 desktop. Everything was working fine until this morning, my external HD stopped responding. Everytime I connect external HD to my desktop, I get " You need to format the disk H: before you can use it".
I've tried changing the drive name as well but with no success.
Windows 7 doesn't recognize my D partition though windows XP used to recognize it just fine on my computer, and it also used to work fine on that HDD using that same version of windows 7 on my old computer. My computer is a Dell Optiplex 745 and my HDD is WD10EARS (No Jumpers is being used) Here is a Screen of the installation Process
When I insert a disk, the OS reads it correctly, and I can do whatever with it. However when I remove it, Windows still shows the disk is inserted, and inserting another disk causes any program that tries to access it to hang indefinitely (including individual windows explorer instances).
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I have an external USB drive attached to a Windows 7 Ultimate box. The USB drive has video files that I stream to my Samsung TV using DLNThe setup works except last night when I copied over .MP4 files to the USB drive. For this file extension, the files did not show as playable over DLNA. Is there a way to enable the setup to recognize this file extension?
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