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Inspiron 14r freezing

post #1 of 3
Thread Starter 
Recently my laptop has been freezing. I have a Dell Inspiron 14R N4110 laptop, it has an I3 2310 processor, 4gb of ram and a 640gb WD hard disk. I have Windows 7 Home premium and Ubuntu 12.04 dual booting on it with the grub boot manager.

I have ran the Dell windows diagnostic suite that comes on the laptop to no avail. I have verified that the laptop is not overheating, the highest it has gotten is 64C. When none of these things worked I started digging deeper. I have run Memtest86, and the Dell pre-boot diagnostics, all with no bad results. I have not received any error codes and the event log wasn't showing anything out the ordinary. The only thing I noticed is that my wireless card was connecting and disconnecting a bunch. I have run the system file checker utility and ran checkdisk /r with no detected errors.

After reaching no resolution with the above activities, I restored the hard disk to factory defaults via the recovery partition. I was able to boot into windows fine (as always) but after the final boot up, it froze not more than a few minutes after it started up. So in my mind I have removed the hard disk and ram as a possibility. I have removed a corrupt file or corrupt software from the equation as I am running off of a fresh installation. I do not crash in Ubuntu, and have not experienced any freezing in Ubuntu whatsoever. The limited time I have spent in safe mode (without network) has not caused any freezing, so I would like to believe that perhaps some sort of hardware that does not run a driver in safe mode is at fault.

I suspect that perhaps my wireless card is failing and causing my laptop to crash, but I have no evidence to support this other than some erroneous connectivity to my wireless network.

Anyone have any ideas as to what I need to look into at this point? I'll try running windows with my wireless NIC disabled and see if it freezes. If it isn't the wireless NIC, I have no idea where to look next.
post #2 of 3
It could definitely be your wireless card, in particular the wireless drivers and the way those drivers interact with Windows TCP./IP stack.

My ASUS 1015pn netbook had a similar problem to yours. The wireless drivers would randomly disconnect from my wireless network then crash my computer. It was so bad that I had to hard reset by holding down the power button. I ended up disabling the wireless card via device manager and now I use the ethernet instead. No crashes anymore.

FYI, the wireless card is a Azurewave NIC with Broadcom controller.

Hope this helps.
    
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CPUMotherboardGraphicsRAM
Intel Core i5 3570K @4.4 GHz ASRock Z77 Extreme4-m ASUS GTX 670 DirectCUII TOP Patriot VIPER III 2x8 GB DDR3 1600 
Hard DriveHard DriveOptical DriveCooling
Crucial m500 240 GB Samsung 850 EVO 500 GB ASUS DVD-burner Cooler Master Hyper 212 EVO 
OSMonitorKeyboardPower
Windows 7 Ultimate 64-bit Dell Ultrasharp U2412m Rosewill RK-9000 Cherry MX Blue SeaSonic M12II 620 Bronze 
CaseMouseAudioAudio
Rosewill R101-P-BK Logitech G100s HRT Music Streamer II -> Audinst AMP-HP -> Westone 4 
Audio
Etymotic Research ER-4P 
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Reply
post #3 of 3
Thread Starter 
So as I type this, my laptop has been running with no hangs or freezing for the past 4 days, 15 hours. I would have replied sooner, but I wanted to make sure that it wasn't a fluke, considering how often it was freezing prior. All I did was installed all the windows 7 updates, and the latest wireless NIC driver from the Intel website rather than the Dell website.

So this leaves me puzzled as to why this was occurring in the first place. The only thing I can come up with is that perhaps I never updated the wireless drivers. These drivers may have been outdated to the point where they had compatibility issues with windows past a certain update. Updating the drivers to the latest addressed the bug, and thus no freezing. This is the only thing I can come up with, if it isn't the driver for the wireless NIC, I don't know what it could be.

At any rate, I am happy that my laptop is operational again, and that I'm no longer having issues with it freezing.

For the sake of details, in the event someone else has this issue, the wireless NIC in this laptop is the Intel Centrino 1030N.
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