Computer locks up and router drops wireless capability at the exact same time... Weird problem here.

Phrozt

Distinguished
Jun 19, 2002
565
0
18,980
I need to find someone who has a very unique set of skills which includes strong knowledge of the circuitry of modern electronic devices, as well as a good knowledge of home wiring. I'm having a very odd problem. My computer has been locking up to the point I need to restart it more and more every day. No BSOD/black screen, no events in the eventvwr. I've tried all sorts of fixes including updates, disc check, and a few other ways to try to capture anomalies to no avail.

I noticed something else though. The wireless internet has always been crappy since we got the Comcast modem/router, but now it was literally dropping all wireless connections. Every single wireless device from phones, to laptops, to tablets would be dropped simultaneously, while the router reported no problems with the wireless service.

As I saw more computer lockups, I noticed that there is a DIRECT correlation between when the computer locks up and when the wireless drops out. This got me thinking that it might be something to do with the connection to the wall, so it could be the outlet, the surge protector, or the UPS.

I tried all kinds of combinations between cords, surge protector to UPS, UPS to surge protector, UPS directly to wall, surge protector to the wall, wire to the wall, and switching up these connections so that the computer would be connected one way and the router another. The computer locks and wireless drops still correlate exactly.

I haven't tried running an extension cord from to an outlet in another room, but at the same time I can't see how all outlets in a room would all of a sudden be doing something that neither a surge protector nor UPS could handle.

If anyone could help me with this issue, testing the wall, other tests to run on the hardware... or knows someone who has these skills, I would be very appreciative. The locks and wireless drops are happening more and more frequently every day, which is clearly annoying as heck, but I'm also worried about the damage to my computer components with the frequent hard resets.

If you even know the *type* of professional I need to seek for this help, I'd appreciate that as well.

Few things to note:

- It does not lock up when I'm in the middle of BF4 or any other activity causing strain on the comp. Usually it's when it comes from a sleep, or after I've left the room to go get something.
- The desktop does not use wireless, it's hardwired to the router. Doesn't even have a wireless card.
- I've lived in this house since the end of 2006, and the computer is in the same room it's always been in, so while I would tend to suggest that 2 different devices going out at the same time would be an electrical thing, nothing has changed in the past 8 years. The UPS is new w/in the past few years.
- I have had a ton of problems w/dropping packets about once ever 20-30 sec since Septemberish, but that actually seems to have gone away. Maybe they boosted it too much?

System specs:
- i7-2600 (not K)
- Gigabyte GV-N670OC-2GD GTX 670
- Asus P8z68-V PRO/GEN3
- Intel 330 180GB - SSDSC2CT180A3K5
- G.SKill Ripjaws X series. 16GB (4x4)
- Corsair HX 620W

- Also have 2 Seagate 7200.10 320GB (...620AS) from 2007 and a Seagate 7200.12 1TB (...528AS) from 2009

All parts were purchased 2012 except the PSU, which was in 2007
 

Phrozt

Distinguished
Jun 19, 2002
565
0
18,980
PSU added, sorry about that.

I'll leave it disconnected overnight. I can't really do it during the day because I work from home and, again, the desktop doesn't even have a wireless card in it. I've had to restart it every single morning for pretty much a week now, so that should be good, as long as I don't change too many things to day in the course of troubleshooting.


EDIT: @Someone - Also added information on how long I've had this configuration in the notes section.
EDIT EDIT: @ i7 - I added another note about my internet connection. You may be on to something there.
 

Phrozt

Distinguished
Jun 19, 2002
565
0
18,980
Another thread seems to be suggesting the router/modem device itself as the problem, which I'm sure I can verify with a test of leaving the comp unplugged from the router overnight.

In that vein, I still have my motorola SB5101 modem which worked great for years, but it's quite a few years old, so I'm wondering if it is up to spec w/current speeds and such. I also still have my dual band Netgear WNDR3400-100NAR which worked great as well, but I know that it's only 10/100M internally, and I'd definitely like to upgrade to 1Gbps, mostly because I noticed that it usually never got past 54Mbps in actual use and sometimes would drop below that. I figure w/more bandwidth I should at least get a good 150Mbps connection.

I was given the suggestion that I should look for a cable modem which can handle DOCSIS 3.0 and Download speeds up to 343 Mbps. The model they suggested is SB6141 SURFboard® eXtreme Cable Modem.

Any thoughts?
 

Phrozt

Distinguished
Jun 19, 2002
565
0
18,980
Thing is, it's a modem/router combo.. yeah. While it makes no sense for a crashing router to kill a computer, it does seem to be pointing more in that direction. I haven't reset wireless capability on the unit, and haven't had a crash so far. Granted it's only been about half a day, but that's actually an accomplishment given the past week. I'm starting to now draw parallels between when I'd reset the wireless on the router, and then would experience a crash not too terribly long after.

The fact of the matter is, we've been pretty unhappy with the unit since I made the crossover anyway. My fiancee has had extreme connection issues to the point that she has to prop her laptop up on the arm of the couch from the end table (moving it about 3 inches up in an uncomfortable position) just to get packet loss to about 80% as opposed to 50%+. That's from just going out of the room, down the hall 4 feet, through an opening, a 180 degree turn, and about 15 feet past that. So basically 30 ft away direct measurement, or about 10 ft away going through the wall. That's a bit ridiculous IMO, and I don't think it's just a faulty unit.

Our device load is decently intense as well, with the following being able to connect:
- Desktop (hardwired)
- VOIP phone (hardwired)
- Work laptop (hardwired through VOIP phone)
- XB360 (hardwired)
- Gaming laptop (wireless)
- Fiancee's laptop (wireless)
- Nokia 2520 tablet
- Nokia 1520 phone
- Nokia 920 phone

With that being said, I also do NOT like the lack of administration options in the modem/router, was not really excited about the combo unit to begin with, really enjoyed my old modem, and although I have had varied experiences with multiple routers over the years, I still seem to have consistently had better performance from any other router I've had over this unit.

It already seems like a good idea to get a discrete modem, and I can pick up a SB6141 for ~$65, which I'm fine with. I see that router prices have jumped a bit, but it looks like I can pick up a RT-N66U for around $110 from amazon, used. So ~$175 for an upgrade to get away from something I have very little faith in anyway doesn't seem like that bad of an option.

I did some research and for a moment got sucked into the AC over N hype, but I don't think most of my devices will even benefit from the newer draft, and I doubt any devices we have will really utilize it for a handful of years. IMO, it makes more sense to get a good, reliable N unit for quite a bit less right now and wait for something good on the AC horizon when the technology gets a bit better. The RT-N66U also seems to get a lot of high marks for reliability, which is pretty big on my list (for obvious reasons). On my list, the only device that will benefit from AC is my 1520 (was a bit disappointed to see that my new tablet did not even have AC), and it seems a bit silly to spend more just for that. The fiancee just got her 920 not too long ago, so she still has the majority of her 2 year contract to get through before upgrading.

What do you guys think?
 
You're going to have to do a bit better to get that list of devices into 'intense' territory... I've got about that many devices just sitting on my desk.

If it's got removable antennas, try removing and reattaching them. Try changing wireless channels, too.

Currently, I'd be looking at a good simultaneous dual-band N unit. As you said, it's not going to kick off for a few years.

Still, you should definitely find out why the PC is crashing. That shouldn't happen.

I'm off to bed...
 

Phrozt

Distinguished
Jun 19, 2002
565
0
18,980
The RT-N66U looks like a good simultaneous dual band option in that respect then. I'm hoping I won't be too frustrated if my comp isn't fixed, but if I can at MINIMUM maintain wireless connectivity and improve the range, then that's something I have been promising for awhile now.. so hopefully that will win some points.

I appreciate all your attention to my thread, someone. Thanks!
 

Phrozt

Distinguished
Jun 19, 2002
565
0
18,980
Well I ended up going with the RT-AC56U because it was actually a bit cheaper and still allowed me to expand to AC.

One weird thing though... my newer laptop, sitting only 5 ft from the router... can't see the 5ghz network, but my fiancee's older laptop can. Both are N.

EDIT: Nm.. apparently the newer lappy's (HP) NIC only supports 2.4ghz, and the older one (dell refurb) supports 5ghz