That's about $630 USD. Not knowing the market in India, it would be hard to suggest any model. In the US, that would buy a pretty decent laptop with an i3 or i5 Intel but I'm not a recent shopper. Besides that, the Asia-Pacific models may be different model numbers all together. Your best bet is to review models available for your area.
I suspect the marketing is totally different but I get lots of ads in every Sunday newspaper for local/regional outlets.
My Computer
At a glance
Windows 7 Pro-x64i7-2600 3.4GHz - 3.8GHz Turbo8Gb - 2x4GB, Muskin 991770 PC3-1333Integrated Intel HD 2000
Computer type
PC/Desktop
Computer Manufacturer/Model Number
Built 2/11/2011
OS
Windows 7 Pro-x64
CPU
i7-2600 3.4GHz - 3.8GHz Turbo
Motherboard
Intel DH67BL-B3
Memory
8Gb - 2x4GB, Muskin 991770 PC3-1333
Graphics Card(s)
Integrated Intel HD 2000
Sound Card
Integrated Intel 10.1 HD, RealTek ALC892
Monitor(s) Displays
Asus LCD VH222H, Haier HL24XSL2a
Screen Resolution
1920x1080, 1920x1080
Hard Drives
Crucial SSD C300-128Gb,
Western Digital WD5002AALX - 500Gb,
Western Digital WD7501AALS - 750Gb
PSU
Seasonic 650W 80+ Gold Modular
Case
Rosewill Defender
Cooling
Stock CPU, Four 120mm case fans, PCH fan added
Keyboard
Logitech EX100 Y-RBH94 Wireless
Mouse
Logitech EX100 M-RCE95 Wireless
Internet Speed
3.0/1.5 Mbs
Antivirus
Microsoft Security Essentials
Browser
Microsoft Internet Explorer 11
Other Info
Antec Veris Premier-Multimedia IR Station,
Cyber Accoustics-3602 Speakers,
AFT XM-5U Card Reader,
Hauppauge TV-HVR-2250,
Sony LX300 USB Turntable
Hi,
Yep a tough region for us to figure out
Not very great longevity mine is darn near 6 years old now silly little gateway M series.
Always keep it clean on the inside,
Never cover the bottom entirely that is where the air intake vent is.
Make sure it has a ssd.
My Computer
At a glance
Win-7-Pro64bit 7-H-Prem-64biti7-5930K 2nd i9-9940x both water blocked VRM'...Trident-z 3200C14 2nd Trident-z 3600C16EVGA 1080ti ftw3 2nd Titan Xp both water blocked
Computer type
PC/Desktop
Computer Manufacturer/Model Number
Custom assembled by me :}
OS
Win-7-Pro64bit 7-H-Prem-64bit
CPU
i7-5930K 2nd i9-9940x both water blocked VRM's too
2nd ASUS X299 Apex/Intel i9-9940x with Custom water loop/7H-Prem-x64/Corsair 450D case/Ram Trident-z 3600C16 4x8gb / Samsung970Evo plus 500gb SSD/Dual ssd EZ swap evo/PSU EVGA SuperNova 1200w-P2 80+Platinum/GPU Titan Xp /8-ML-140 on push-pull on 2-280GTX rads
Win-7-Pro64bit 7-H-Prem-64biti7-5930K 2nd i9-9940x both water blocked VRM'...Trident-z 3200C14 2nd Trident-z 3600C16EVGA 1080ti ftw3 2nd Titan Xp both water blocked
Computer type
PC/Desktop
Computer Manufacturer/Model Number
Custom assembled by me :}
OS
Win-7-Pro64bit 7-H-Prem-64bit
CPU
i7-5930K 2nd i9-9940x both water blocked VRM's too
2nd ASUS X299 Apex/Intel i9-9940x with Custom water loop/7H-Prem-x64/Corsair 450D case/Ram Trident-z 3600C16 4x8gb / Samsung970Evo plus 500gb SSD/Dual ssd EZ swap evo/PSU EVGA SuperNova 1200w-P2 80+Platinum/GPU Titan Xp /8-ML-140 on push-pull on 2-280GTX rads
Use it for what? How will it be used? Is the HD graphics important to you? Memory? Disk storage?
I did a few quick shopping sprees (on price alone) before looking at the detail of your present laptop. I'm impressed with what you have. You'll have a hard time matching that for your budget. If the Sony runs well, you might think about upgrading it with a SSD and save some bucks. Unload all the Sony "bloatware" that usually comes with it and bump the RAM to 8GB if you have a lot of applications running all the time. Also review your AV software. Many are a lead weight to the system. I've got a little sub-$400 HP laptop that is supper fast after removing the extra crapware, fine tuning the startup and going with Microsoft Security Essentials AV. It boots to the desktop in about 30 seconds and shuts down in about 6 seconds so I never bother with sleep, hibernate, etc. And that's with a HDD.
About the only thing I see wrong with your current laptop is the 1.5 hour battery. That's probably due to the graphics card. If you could make do with integrated graphics, you'd be within budget for a new laptop and bump battery life to the 4-5 hour range.
So re-read my first line above.
My Computer
At a glance
Windows 7 Pro-x64i7-2600 3.4GHz - 3.8GHz Turbo8Gb - 2x4GB, Muskin 991770 PC3-1333Integrated Intel HD 2000
Computer type
PC/Desktop
Computer Manufacturer/Model Number
Built 2/11/2011
OS
Windows 7 Pro-x64
CPU
i7-2600 3.4GHz - 3.8GHz Turbo
Motherboard
Intel DH67BL-B3
Memory
8Gb - 2x4GB, Muskin 991770 PC3-1333
Graphics Card(s)
Integrated Intel HD 2000
Sound Card
Integrated Intel 10.1 HD, RealTek ALC892
Monitor(s) Displays
Asus LCD VH222H, Haier HL24XSL2a
Screen Resolution
1920x1080, 1920x1080
Hard Drives
Crucial SSD C300-128Gb,
Western Digital WD5002AALX - 500Gb,
Western Digital WD7501AALS - 750Gb
PSU
Seasonic 650W 80+ Gold Modular
Case
Rosewill Defender
Cooling
Stock CPU, Four 120mm case fans, PCH fan added
Keyboard
Logitech EX100 Y-RBH94 Wireless
Mouse
Logitech EX100 M-RCE95 Wireless
Internet Speed
3.0/1.5 Mbs
Antivirus
Microsoft Security Essentials
Browser
Microsoft Internet Explorer 11
Other Info
Antec Veris Premier-Multimedia IR Station,
Cyber Accoustics-3602 Speakers,
AFT XM-5U Card Reader,
Hauppauge TV-HVR-2250,
Sony LX300 USB Turntable